CN217505321U - Transformer oil extraction device and transformer assembly - Google Patents
Transformer oil extraction device and transformer assembly Download PDFInfo
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- CN217505321U CN217505321U CN202221429884.9U CN202221429884U CN217505321U CN 217505321 U CN217505321 U CN 217505321U CN 202221429884 U CN202221429884 U CN 202221429884U CN 217505321 U CN217505321 U CN 217505321U
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- 238000000605 extraction Methods 0.000 title claims description 32
- 238000005086 pumping Methods 0.000 claims abstract description 88
- 210000001503 joint Anatomy 0.000 claims abstract description 33
- 238000004891 communication Methods 0.000 claims description 36
- 238000003032 molecular docking Methods 0.000 claims description 19
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 abstract description 32
- 238000010168 coupling process Methods 0.000 abstract description 32
- 238000005859 coupling reaction Methods 0.000 abstract description 32
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 10
- 230000005611 electricity Effects 0.000 description 4
- 230000003137 locomotive effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The application provides a transformer oil draw-out device and transformer subassembly, transformer oil draw-out device includes coupling assembling and oil pumping assembly, coupling assembling includes butt joint spare and coupling hose, the butt joint spare has both ends open-ended connection chamber, the first end of coupling chamber is configured as the oil discharge mouth butt joint with the transformer, the first end of second end and coupling hose is connected, and the internal diameter of the partial chamber wall in coupling chamber is held gradually by the first end of coupling chamber to the second of coupling chamber and is increased, oil pumping assembly is including taking out oil pipe and mobilizable piston spare that sets up in taking out oil pipe, it connects to take out oil pipe and coupling hose's second end, oil pumping assembly is configured as when the relative oil pipe activity of piston spare, take out the transformer oil in the transformer through the negative pressure, can be when the inside negative pressure that is of transformer, successfully get oil.
Description
Technical Field
The application belongs to the field of transformers, and particularly relates to a transformer oil extraction device and a transformer assembly.
Background
The transformer is the core part of electric locomotive, converts the high-tension electricity from the contact net into the required low-tension electricity of electric locomotive, and after electric locomotive reached regulation stroke, the oil appearance needs to be detected to the inside of transformer, and then the performance of analysis transformer.
The existing oil taking device comprises a flange plate, a stop valve and a storage container, wherein the flange plate is used for connecting and fixing the transformer and the stop valve, the storage container is arranged below the stop valve, specifically, when oil is taken, the stop valve is slowly opened, so that an oil sample in the transformer flows to the storage container through the flange plate and the stop valve, and the stop valve is closed until the oil sample in the storage container reaches the requirement.
However, the oil extraction process is easily affected by climate and use conditions, and oil samples cannot naturally flow out, so that oil extraction failure is caused.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, this application provides a transformer oil draw-out device and transformer subassembly, can be when the inside negative pressure that is of transformer, successfully get oil.
The application provides a transformer oil draw-out device, including coupling assembling and oil pumping assembly, coupling assembling includes butt joint spare and coupling hose, the butt joint spare has both ends open-ended connection chamber, the first end of connection chamber is configured to the oil discharge mouth butt joint with the transformer, the first end of second end and coupling hose is connected, and the internal diameter of the partial chamber wall in connection chamber is crescent by the first end of connection chamber to the second end of connection chamber, oil pumping assembly is including taking out oil pipe and mobilizable piston spare that sets up in taking out oil pipe, it connects to take out oil pipe and coupling hose's second end, oil pumping assembly is configured to when the relative oil pipe activity of piston spare, take out transformer oil in the transformer through the negative pressure.
Optionally, the butt joint member includes a flange plate and a butt joint pipe connected to one side of the flange plate, the flange plate is used for being connected with the transformer, the connection cavity is formed in the butt joint pipe, and the first end of the connection cavity penetrates through to one side of the flange plate, which is opposite to the butt joint pipe.
Optionally, the butt joint pipe comprises a first communicating pipe and a second communicating pipe which are sequentially connected from a first end of the connecting cavity to a second end of the connecting cavity, the outer diameter of the second communicating pipe is smaller than that of the first communicating pipe, the connecting hose sleeve is arranged on the outer side of the second communicating pipe, the connecting cavity comprises a communicating section and a reducing section, the communicating section and the reducing section are correspondingly arranged in the first communicating pipe, the communicating section and the reducing section are sequentially connected, the inner diameter of the reducing section is gradually increased from the first end of the connecting cavity to the second end of the connecting cavity, and the maximum inner diameter of the reducing section is smaller than that of the communicating section.
Optionally, the thickness of the end wall of the first communication pipe facing the end of the second communication pipe is greater than the thickness of the side wall of the first communication pipe.
Optionally, the outer wall of the second communicating pipe is provided with a plurality of annular protrusions, the annular protrusions are sequentially arranged at intervals along a direction from the first end of the connecting cavity to the second end of the connecting cavity, and one surface of each annular protrusion facing the second end of the connecting cavity is an inclined surface.
Optionally, the flange and the butt pipe are welded into an integral structure.
Optionally, the first end of the oil pumping pipe is connected with the second end of the connecting hose, the second end of the oil pumping pipe is provided with an opening, the piston member is movably arranged in the oil pumping pipe through the opening, and the piston member blocks the opening.
Optionally, the oil pumping pipe is a glass pipe.
Optionally, the connection hose is a silicone tube or a rubber tube.
The application provides a transformer subassembly, including transformer and transformer oil draw-out device, the transformer includes transformer body, stop valve and unloads the hydraulic fluid port, and the stop valve is connected between transformer body and the hydraulic fluid port of unloading.
The application provides a transformer oil draw-out device and transformer subassembly, transformer oil draw-out device includes coupling assembling and oil pumping assembly, coupling assembling includes butt joint spare and coupling hose, the butt joint spare has both ends open-ended connection chamber, the first end of coupling chamber is configured as the oil discharge mouth butt joint with the transformer, the first end of second end and coupling hose is connected, and the internal diameter of the partial chamber wall in coupling chamber is held gradually by the first end of coupling chamber to the second of coupling chamber and is increased, oil pumping assembly is including taking out oil pipe and mobilizable piston spare that sets up in taking out oil pipe, it connects to take out oil pipe and coupling hose's second end, oil pumping assembly is configured as when the relative oil pipe activity of piston spare, take out the transformer oil in the transformer through the negative pressure, can be when the inside negative pressure that is of transformer, successfully get oil.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a transformer oil extraction device provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a docking piece according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of an oil pumping assembly according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a transformer assembly according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a transformer according to an embodiment of the present application.
Description of reference numerals:
100-transformer oil extraction device and transformer assembly;
200-transformer oil extraction device;
300-a transformer assembly;
210-a connection assembly;
220-an oil pumping assembly;
310-a transformer;
211-an interface element;
212-connecting hoses;
213-a connecting cavity;
214-a flange;
215-butt pipe;
2131-a communicating section;
2132-a variable diameter section;
2151-a first communication pipe;
2152-second communication tube;
2153-annular projection;
221-oil pumping pipe;
222-a piston member;
2211-opening;
311-transformer body;
312-a shut-off valve;
313-oil discharge port.
Detailed Description
In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The existing oil taking device comprises a flange plate, a stop valve and a storage container, wherein the flange plate is used for connecting and fixing the transformer and the stop valve, the storage container is arranged below the stop valve, specifically, when oil is taken, the stop valve is slowly opened, so that an oil sample in the transformer flows to the storage container through the flange plate and the stop valve, and the stop valve is closed until the oil sample in the storage container meets the requirement.
However, the oil extraction process is easily affected by climate and use conditions, and oil samples cannot naturally flow out, so that oil extraction failure is caused.
In order to solve the problems, the application provides a transformer oil extraction device and a transformer assembly, the transformer oil extraction device comprises a connecting assembly and an oil pumping assembly, the connecting assembly is connected to a transformer and the oil pumping assembly of the transformer assembly, so that the connecting assembly, the oil pumping assembly and the transformer form a complete whole, when a piston of the oil pumping assembly moves relative to an oil pumping pipe, transformer oil in the transformer is pumped out through negative pressure, and oil can be successfully extracted when the inside of the transformer is negative pressure.
The details of the present application will now be further described with reference to the accompanying drawings and detailed description.
The transformer oil extraction device and the transformer assembly of the scheme comprise a connecting assembly and an oil pumping assembly, wherein the connecting assembly comprises a butt joint piece and a connecting hose, a first end of a connecting cavity in the butt joint piece is in butt joint with the transformer, a second end of the connecting hose is connected with a first end of the oil pumping assembly, and a second end of the connecting hose is connected with an oil pumping pipe of the oil pumping assembly, the connecting component and the oil pumping component form a complete whole, when the piston part of the oil pumping component moves relative to the oil pumping pipe, the transformer oil in the transformer is pumped out through negative pressure, and the oil can be successfully taken out when the inside of the transformer is under the negative pressure.
Fig. 1 is a schematic structural diagram of a transformer oil extraction device provided in an embodiment of the present application. As shown in fig. 1, the transformer oil extraction apparatus 200 includes a connection assembly 210 and an oil pumping assembly 220, the connection assembly 210 functions to connect and fix various parts of the transformer oil extraction apparatus 200, wherein the connection assembly 210 includes an abutting part 211 and a connection hose 212, the connection hose 212 is used to connect the abutting part 211 and the oil pumping assembly 220, so that the connection assembly 210 and the oil pumping assembly 220 form a complete whole, and the oil pumping assembly 220 is configured to pump out transformer oil in a transformer 310 by negative pressure.
Specifically, the docking member 211 has a connection cavity 213 with two open ends 2211. Fig. 2 is a schematic structural diagram of an interface element according to an embodiment of the present application. As shown in fig. 2, a first end of the connection cavity 213 is configured to be abutted against the oil discharge port 313 of the transformer 310, so that the transformer oil in the transformer 310 can smoothly pass through the first end of the connection cavity 213 and enter a second end of the connection cavity 213, and the second end of the connection cavity 213 is connected to a first end of the connection hose 212, so that the transformer oil entering the second end of the connection cavity 213 can smoothly pass through the connection hose 212. FIG. 3 is a schematic structural diagram of an oil pumping assembly according to an embodiment of the present application. As shown in fig. 3, the oil pumping assembly 220 comprises an oil pumping pipe 221 and a piston member 222 movably disposed in the oil pumping pipe 221, the oil pumping pipe 221 is connected to the second end of the connection hose 212, so that the transformer oil entering the connection hose 212 enters the oil pumping pipe 221, wherein the oil pumping assembly 220 is configured such that when the piston member 222 moves relative to the oil pumping pipe 221, the volume of air in the oil pumping pipe 221 is increased by an external force, the pressure in the oil pumping pipe 221 is decreased, and a pressure difference, i.e., a negative pressure, is formed between the external atmospheric pressure and the pressure, the negative pressure acts on the transformer oil, and the transformer oil in the transformer 310 is pumped out by the negative pressure, so that the oil can be successfully taken when the pressure in the transformer 310 is negative.
Further, the inner diameter of the partial cavity wall of the connection cavity 213 is gradually increased from the first end of the connection cavity 213 to the second end of the connection cavity 213, because when the inside of the transformer 310 is negative pressure, the inner diameter of the partial cavity wall of the connection cavity 213 is gradually increased from the first end of the connection cavity 213 to the second end of the connection cavity 213, on one hand, the volume of air in the connection cavity 213 can be larger, and further the pressure is smaller, and a larger pressure difference is formed between the pressure and the outside atmospheric pressure, so that the oil pumping assembly 220 can provide larger pressure, on the other hand, the inner diameter of the partial cavity wall of the connection cavity 213 is gradually increased from the first end of the connection cavity 213 to the second end of the connection cavity 213, so that the transformer oil can more smoothly pass through the connection cavity 213, and finally the transformer oil in the transformer 310 can be more easily pumped out.
Optionally, the docking member 211 includes a flange 214 and a docking pipe 215 connected to a side of the flange 214, the flange 214 is used for connecting with the transformer 310, so that the transformer 310 is connected with the docking pipe 215, a first end of the connection cavity 213 penetrates to a side of the flange 214 opposite to the docking pipe 215, specifically, the connection cavity 213 is formed in the docking pipe 215, the first end of the connection cavity 213 is configured to be docked with the oil discharge port 313 of the transformer 310, so that the transformer oil in the transformer 310 can smoothly pass through the flange 214, since the first end of the connection cavity 213 penetrates to a side of the flange 214 opposite to the docking pipe 215, the transformer oil along the docking pipe 215, through the first end of the connection cavity 213, enters a second end of the connection cavity 213, and the second end of the connection cavity 213 is connected with the first end of the connection hose 212, so that the transformer oil entering the second end of the connection cavity 213 can smoothly pass through the connection hose 212, the transformer oil entering the connection hose 212 is finally introduced into the oil suction pipe 221.
Optionally, the docking pipe 215 includes a first connection pipe 2151 and a second connection pipe 2152 sequentially connected from a first end of the connection cavity 213 to a second end of the connection cavity 213, the first connection pipe 2151 is connected to the flange plate 214 and the second connection pipe 2152, an outer diameter of the second connection pipe 2152 is smaller than an outer diameter of the first connection pipe 2151, the connection hose 212 is sleeved outside the second connection pipe 2152, the connection cavity 213 includes a communication section 2131 correspondingly disposed in the first connection pipe 2151 and a diameter-changing section 2132 correspondingly disposed in the second connection pipe 2152, the communication section 2131 and the diameter-changing section 2132 are sequentially connected, specifically, the piston member 222 in the oil pumping assembly 220 moves relative to the oil pumping pipe 221, when the transformer oil in the transformer 310 is pumped out by negative pressure, the transformer oil in the transformer 310 enters the docking pipe 215 through the oil discharge port 313 and the flange plate 214, and in the docking pipe 215, the transformer oil passes through the first connection pipe 2151 connected to the flange plate 214, and the transformer oil enters the second communication pipe 2152, further enters the connection hose 212 sleeved on the outer side of the second communication pipe 2152, and finally enters the oil pumping pipe 221 through the transformer oil entering the connection hose 212.
Optionally, the thickness of the end wall of the first communication pipe 2151 facing one end of the second communication pipe 2152 is greater than the thickness of the side wall of the first communication pipe 2151, and during the pumping of the transformer oil in the transformer 310 by the oil pumping assembly 220 through negative pressure, a large pressure may be generated, and since the thickness of the end wall of the first communication pipe 2151 facing one end of the second communication pipe 2152 is greater than the thickness of the side wall of the first communication pipe 2151, the large pressure generated during the pumping of the transformer oil may be borne, and the first communication pipe is protected from being damaged, thereby protecting the docking pipe from being damaged.
Optionally, a plurality of annular protrusions 2153 are disposed on an outer wall of the second communication pipe 2152, the annular protrusions 2153 are sequentially arranged at intervals along a direction from a first end of the connection cavity 213 to a second end of the connection cavity 213, and one surface of each annular protrusion 2153 facing the second end of the connection cavity 213 is an inclined surface, specifically, after the connection hose 212 is sleeved outside the second communication pipe 2152, since the outer wall of the second communication pipe 2152 is provided with the plurality of annular protrusions 2153, and the annular protrusions 2153 are sequentially arranged at intervals along a direction from the first end of the connection cavity 213 to the second end of the connection cavity 213, a larger friction force is generated between the connection hose 212 and the second communication pipe 2152, so that the connection between the connection hose 212 and the second communication pipe 2152 is tighter, and the overall air tightness between the connection hose 212 and the second communication pipe 2152 is ensured.
Optionally, the flange plate 214 and the butt joint pipe 215 are welded into an integral structure, specifically, the flange plate 214 is connected to the transformer 310 and the butt joint pipe 215, and the flange plate 214 and the butt joint pipe 215 are welded into an integral structure, so that the flange plate 214 and the butt joint pipe 215 are connected more tightly, and further the transformer 310 and the butt joint pipe 215 are connected more tightly, and leakage of transformer oil is prevented from being caused in the process of pumping out the transformer oil.
Optionally, the first end of the oil pumping pipe 221 is connected to the second end of the connection hose 212, the second end of the oil pumping pipe 221 has an opening 2211, the piston member 222 is movably disposed in the oil pumping pipe 221 through the opening 2211, and the piston member 222 blocks the opening 2211, specifically, when the piston member 222 moves relative to the oil pumping pipe 221 through the opening 2211, since the first end of the oil pumping pipe 221 is connected to the second end of the connection hose 212, the transformer oil entering the connection hose 212 is pumped out by negative pressure, and when the inside of the transformer 310 is negative pressure, the oil can be successfully taken.
Optionally, the oil pumping pipe 221 is a glass pipe, specifically, when the piston 222 moves from the opening 2211 to the oil pumping pipe 221, since the oil pumping pipe 221 is a glass pipe, friction of the piston 222 with respect to the oil pumping pipe 221 can be reduced, and the oil pumping assembly 220 can provide a larger pressure, so that transformer oil in the transformer 310 can be pumped out more easily, on the other hand, after the transformer oil enters the oil pumping pipe 221, since the oil pumping pipe 221 is a glass pipe, leakage, corrosion and other phenomena caused by the transformer oil can be avoided, and further, when transformer oil in the oil pumping pipe 221 is inverted in the subsequent process, convenience can be brought.
Optionally, the connection hose 212 is a silicone tube or a rubber tube, specifically, one end of the connection hose 212 is connected to the second communication tube 2152, and the other end of the connection hose is connected to the oil pumping tube 221, because the connection hose 212 is a silicone tube or a rubber tube, the connection between the connection hose 212 and the second communication tube 2152 and the connection between the oil pumping tube 221 can be made tighter, and the phenomenon that the pressure in the oil pumping tube 221 is reduced due to insufficient airtightness is avoided, on the other hand, the connection hose 212 is a silicone tube or a rubber tube, and therefore, the phenomena of leakage, corrosion and the like caused by transformer oil can be avoided, meanwhile, the connection hose 212 is a silicone tube or a rubber tube, and can be bent according to the actual use situation, and the space of the whole transformer oil extraction device 200 is saved.
Fig. 4 is a schematic structural diagram of a transformer assembly according to an embodiment of the present application. As shown in fig. 4, the transformer assembly 300 includes a transformer 310 and a transformer oil extraction device 200. Fig. 5 is a schematic structural diagram of a transformer according to an embodiment of the present application. As shown in fig. 5, the transformer 310 includes a transformer body 311, a stop valve 312 and an oil discharge port 313, the transformer body 311 is composed of parts such as an iron core, a winding and an oil tank, and converts high voltage electricity from a catenary into low voltage electricity required by the electric locomotive, transformer oil is disposed in a gap between the parts inside the transformer body 311 to perform an insulation function and prevent the iron core from rusting, the stop valve 312 is connected between the transformer body 311 and the oil discharge port 313, specifically, after the stop valve 312 of the transformer 310 is opened, when the piston 222 of the oil pumping assembly 220 moves relative to the oil pumping pipe 221 through the opening 2211, the transformer oil in the transformer body 311 enters the docking pipe 215 through the oil discharge port 313 and the flange 214, and in the docking pipe 215, the transformer oil enters the second communication pipe 2152 through the first communication pipe 2151 connected to the flange 214, and then enters the connection hose 212 sleeved outside the second communication pipe 2152, finally, the transformer oil entering the connection hose 212 enters the oil pumping pipe 221, and the oil can be successfully taken out when the inside of the transformer 310 is at negative pressure.
Optionally, a sealing ring is arranged between the transformer 310 and the flange plate 214, so that the connection between the transformer 310 and the flange plate 214 is tighter, leakage caused by transformer oil is prevented, and the sealing ring can be replaced in time according to the aging condition of use in order to achieve a better anti-leakage effect.
The application provides a transformer oil draw-out device and transformer subassembly 100's connection structure as follows: the transformer oil pumping device 200 comprises a connecting assembly 210 and an oil pumping assembly 220, the connecting assembly 210 is connected to a transformer 310 and the oil pumping assembly 220 of the transformer assembly 300, wherein the connecting assembly 210 comprises a butt joint part 211 and a connecting hose 212, the butt joint part 211 is provided with a connecting cavity 213 with openings 2211 at two ends, a flange plate 214 and a butt joint pipe 215 connected to one side of the flange plate 214, the flange plate 214 is connected to a first connecting pipe 2151 in the transformer 310 and the butt joint pipe 215, the first connecting pipe 2151 is further connected with a second connecting pipe 2152, the connecting hose 212 is sleeved on the outer side of the second connecting pipe 2152, the connecting hose 212 connects the second connecting pipe 2152 with an oil pumping pipe 221 of the oil pumping assembly 220, finally the transformer oil pumping device and the transformer assembly 100 are integrated, when a piston 222 in the oil pumping assembly 220 moves relative to the oil pumping pipe 221, the transformer oil in the transformer 310 is pumped out by negative pressure, can be when the inside negative pressure that is of transformer 310, successfully get oil, because the endwall thickness of first communicating pipe 2151's one end towards second communicating pipe 2152 is greater than the lateral wall thickness of first communicating pipe 2151, partial structure of second communicating pipe 2152 inserts in first communicating pipe 2151, can make the connection of first communicating pipe 2151 and second communicating pipe 2152 tighter, and connect the internal diameter of some chamber walls of chamber 213 and increase gradually from the first end of connecting chamber 213 to the second end of connecting chamber 213, can make oil pumping assembly 220 provide bigger pressure, make the transformer oil in transformer 310 take out more easily.
The application provides a transformer oil draw-out device and transformer subassembly, transformer oil draw-out device includes coupling assembling and oil pumping assembly, coupling assembling includes butt joint spare and coupling hose, the butt joint spare has both ends open-ended connection chamber, the first end of coupling chamber is configured as the oil discharge mouth butt joint with the transformer, the first end of second end and coupling hose is connected, and the internal diameter of the partial chamber wall in coupling chamber is held the crescent by the first end of coupling chamber to the second of coupling chamber, oil pumping assembly is including taking out oil pipe and mobilizable piston spare that sets up in taking out oil pipe, it connects to take out oil pipe and coupling hose's second end, oil pumping assembly is configured as when the relative oil pipe activity of taking of piston spare, take out the transformer oil in the transformer through the negative pressure, can be when the inside negative pressure that is of transformer, successfully get oil.
In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, as used herein, indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the position or element so referred to must have a particular orientation, be of particular construction and operation, and thus should not be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communicated with each other inside the two elements or the interaction relationship between the two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present application may be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The transformer oil extraction device is characterized by comprising a connecting assembly and an oil pumping assembly, wherein the connecting assembly comprises a butt joint piece and a connecting hose, the butt joint piece is provided with a connecting cavity with two open ends, the first end of the connecting cavity is configured to be in butt joint with an oil discharge port of a transformer, the second end of the connecting cavity is connected with the first end of the connecting hose, and the inner diameter of part of the cavity wall of the connecting cavity is gradually increased from the first end of the connecting cavity to the second end of the connecting cavity; the oil pumping assembly comprises an oil pumping pipe and a piston piece movably arranged in the oil pumping pipe, the oil pumping pipe is connected with the second end of the connecting hose, and the oil pumping assembly is configured to pump out transformer oil in the transformer through negative pressure when the piston piece moves relative to the oil pumping pipe.
2. The transformer oil extraction device according to claim 1, wherein the docking member comprises a flange and a docking pipe connected to one side of the flange, the flange is used for connecting with the transformer, the connection cavity is formed in the docking pipe, and the first end of the connection cavity penetrates to the side of the flange opposite to the docking pipe.
3. The transformer oil extraction device according to claim 2, wherein the butt joint pipe includes a first communication pipe and a second communication pipe that are sequentially connected from a first end of the connection cavity to a second end of the connection cavity, an outer diameter of the second communication pipe is smaller than an outer diameter of the first communication pipe, and the connection hose is sleeved outside the second communication pipe;
connect the chamber including correspond set up in intercommunication section in the first communicating pipe with correspond set up in the reducing section in the second communicating pipe, the intercommunication section with the reducing section connects gradually, the internal diameter of reducing section by connect the chamber first end extremely connect the second end crescent in chamber, just the biggest internal diameter of reducing section is less than the internal diameter of intercommunication section.
4. The transformer oil extraction device according to claim 3, wherein an end wall thickness of the first communication pipe toward one end of the second communication pipe is greater than a sidewall thickness of the first communication pipe.
5. The transformer oil extraction device according to claim 3, wherein a plurality of annular protrusions are arranged on an outer wall of the second communication pipe, the annular protrusions are sequentially arranged at intervals in a direction from the first end of the connection cavity to the second end of the connection cavity, and one surface of each annular protrusion facing the second end of the connection cavity is an inclined surface.
6. The transformer oil extraction device of claim 2, wherein the flange and the interface tube are welded as a unitary structure.
7. The transformer oil extraction device according to any one of claims 1-6, wherein the first end of the oil extraction pipe is connected to the second end of the connection hose, the second end of the oil extraction pipe has an opening, the piston member is movably disposed in the oil extraction pipe through the opening, and the piston member blocks the opening.
8. The transformer oil extraction device of claim 7, wherein the oil extraction pipe is a glass tube.
9. The transformer oil extraction device according to any one of claims 1-6, wherein the connection hose is a silicone tube or a rubber tube.
10. A transformer assembly comprising a transformer and the transformer oil extraction apparatus of any one of claims 1-9, the transformer comprising a transformer body, a shutoff valve and an oil discharge port, the shutoff valve being connected between the transformer body and the oil discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221429884.9U CN217505321U (en) | 2022-06-09 | 2022-06-09 | Transformer oil extraction device and transformer assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221429884.9U CN217505321U (en) | 2022-06-09 | 2022-06-09 | Transformer oil extraction device and transformer assembly |
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| CN217505321U true CN217505321U (en) | 2022-09-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117250045A (en) * | 2022-06-09 | 2023-12-19 | 中车兰州机车有限公司 | Transformer oil extraction device and transformer components |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117250045A (en) * | 2022-06-09 | 2023-12-19 | 中车兰州机车有限公司 | Transformer oil extraction device and transformer components |
| CN117250045B (en) * | 2022-06-09 | 2025-12-23 | 中车兰州机车有限公司 | Transformer oil extraction device and transformer components |
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